Question

Solve the system of equations and choose the correct order pair.

2x +4y=14
3x+12y=51

-3,20
-3,5
-1,3
-1,12

Answer 1

Answer: a 3,5

Step-by-step explanation:

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Answer 2

`(2x + 4y = 14) / 2 = x + 2y = 7`
making x the subject

`x = 7 - 2y`
substitute into second equation

`3(7 - 2y) + 12y = 51`
by solving, y=5

substitute into first equation

`2x + 4(5) = 14`
by solving, x=-3

Therefore the ordered pair is (-3,5)